|Publication number||US8138925 B2|
|Application number||US 12/354,335|
|Publication date||Mar 20, 2012|
|Filing date||Jan 15, 2009|
|Priority date||Jan 15, 2008|
|Also published as||CA2712072A1, CN101952836A, CN101952836B, EP2235660A1, EP2235660B1, US20090195363, WO2009091888A1|
|Publication number||12354335, 354335, US 8138925 B2, US 8138925B2, US-B2-8138925, US8138925 B2, US8138925B2|
|Inventors||John David Downie, James Scott Sutherland, Richard Edward Wagner, Matthew Scott Whiting, Dale Alan Webb, Keith Allen Hoover, Aravind Chamarti|
|Original Assignee||Corning Cable Systems, Llc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (43), Referenced by (65), Classifications (15), Legal Events (3)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present application claims priority to U.S. Provisional Patent Application Ser. No. 61/011,194, filed on Jan. 15, 2008 and entitled “RFID SYSTEMS AND METHODS FOR AUTOMATICALLY DETECTING AND/OR DIRECTING THE PHYSICAL CONFIGURATION OF A COMPLEX SYSTEM,” which is incorporated herein by reference in its entirety.
1. Field of the Disclosure
The technology of the disclosure relates generally to the use of radio-frequency identification (RFID) systems, and in particular is directed to RFID-based systems and methods for automatically detecting, directing, and/or configuring the physical configuration of a complex system, such as a telecommunications system.
2. Technical Background
Typical telecommunications data centers include large numbers of optical and electrical cable connections that join various types of network equipment. Examples of network equipment include electrically-powered (active) units such as servers, switches and routers, and unpowered (passive) units such as fanout boxes and patch panels. This network equipment is often installed within cabinets in standard (e.g., 19″) equipment racks. Each piece of equipment typically provides one or more adapters where optical or electrical patch cables can be physically connected to the equipment. These patch cables are generally routed to other network equipment located in the same cabinet or to another cabinet.
A common issue in telecommunications data center management is determining the current configuration of all the optical and electrical links among all the network hardware equipment. The configuration of optical and electrical links can be completely determined if the physical locations of all connected patch cable connectors on installed network equipment are known.
Another issue is that some equipment is capable of being installed in any one of multiple orientations when only one particular orientation is correct or desirable. For example, a patch cable that contains a transmit optical fiber and a receive optical fiber needs to be connected to the corresponding adapter in the proper orientation or “polarization” so that the transmit/receive process can occur.
Information about the physical location and orientation of the adapters and their parent patch panels in data center cabinets is presently manually recorded and added to the network management software database after the adapters and patch panels are installed. This process is labor-intensive and prone to errors. Additionally, any changes made to the physical configuration of any network equipment must be followed up with corresponding changes to the network management software database, which delays providing the most up-to-date information about the system configuration. Furthermore, errors from manual recording and entry of configuration data tend to accumulate over time, reducing the trustworthiness of the network management software database. In addition, the need to connect a given connector or install a given piece of equipment in only one of a number of possible orientations also leads to errors in the system's physical configuration, as mentioned above. Finally, it is better to know of an incorrect connection as soon as it is made, rather than sometime later when a problem arises (e.g., loss of a connection or loss of data), and when the source of the problem is more difficult to diagnose.
A first aspect disclosed in the detailed description is a radio-frequency identification (RFID) system for detecting, directing, and/or configuring a configuration of a complex system having a set of one or more types of mateable components. The system includes a set of mateable RFID tags arranged so that each mateable component in the set includes at least one mateable RFID tag. The mateable RFID tags include information relating to their associated mateable components and are arranged so that the mating of components results in the mating of the corresponding RFID tags. The RFID system includes at least one RFID reader adapted to read an RFID tag signal sent from at least one RFID tag in a mated pair of RFID tags, wherein the at least one RFID tag signal contains information about the mated components. The RFID system also includes an information processing system operably connected to the at least one RFID reader. The information processing system is adapted to receive and process information therefrom to establish a number and type of mated connections that constitute the complex system configuration. The information processing system is also optionally adapted to provide directions for configuring the system so that an end-user can configure the complex system.
A second aspect disclosed in the detailed description is an RFID configuration detection system for detecting, directing, and/or configuring a configuration of a complex system having a set of one or more types of mateable components. The RFID system includes at least one mateable RFID tag associated with each mateable component in the set of mateable components and having an antenna electrically connected to an integrated circuit (IC) chip. The IC chip is adapted to store information that includes information relating to its associated mateable component. The at least one mateable RFID tag is arranged relative to its associated component such that mating two mateable components causes the corresponding at least one mateable RFID tag associated with the two mateable components to mate and exchange the information stored therein, and to communicate information regarding their mated status via at least one wireless RFID tag signal. The RFID system includes at least one RFID reader adapted to receive the at least one wireless RFID tag signal from each mated pair of components. The RFID system also includes an information processing system operably connected to the at least one RFID reader. The information processing system is adapted to receive therefrom and process said mated status information to determine the complex system configuration. The information processing system is also optionally adapted to provide directions for configuring the system so that an end-user can configure the complex system.
A third aspect disclosed in the detailed description is an RFID-based method of detecting and/or directing a configuration of a complex system having a set of one or more types of mateable components. The method includes providing each mateable component in the set with at least one mateable RFID tag that includes information about its associated mateable component, including arranging the at least one mateable RFID tag so that when two mateable components mate, the corresponding mateable RFID tags mate and exchange information about their respective mateable components. The method also includes mating a number of mateable components so as to cause the corresponding mateable RFID tags to mate and exchange information about their respective mateable component. The method further includes, for each pair of mated components, generating at least one RFID tag signal that includes information relating to the mated components. The method further includes receiving and processing the at least one RFID tag signal from each pair of mated components to determine the complex system configuration.
The method optionally includes directing a change in the system configuration by causing an RFID tag to attract the attention of a system end-user with respect to a first mateable component, and then indicating to the system end-user to connect a second mateable component to the first mateable component.
Additional features and advantages of the invention will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the invention as described herein, including the detailed description that follows, the claims, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description present embodiments of the invention, and are intended to provide an overview or framework for understanding the nature and character of the invention as it is claimed. The accompanying drawings are included to provide a further understanding of the invention, and are incorporated into and constitute a part of this specification. The drawings illustrate the various exemplary embodiments of the invention, and together with the description serve to explain the principals and operations of the invention.
Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Whenever possible, like reference numbers will be used to refer to like components or parts.
The detailed description discloses systems for and methods of automatically detecting the physical configuration of the components of a relatively complex apparatus, piece of equipment, appliance, device, instrument, tool, mechanism, system, etc. (collectively referred to hereinafter as a “complex system”). A related aspect includes directing the configuration of the complex system, and in particular the re-configuration of the system. Here, a “complex system” means a system having a number of mateable components that, because of their sheer numbers and/or the character of how the components mate, manually tracking the different possible system configurations can be tedious and/or can be relatively difficult and can lead to errors in the system configuration. In an example embodiment, what constitutes a “complex system” is not a function of the number of components per se, but rather is a function of the importance of achieving the proper mating connection among different system components, and the adverse consequences associated with making one or more improper connections. Thus, in embodiments disclosed herein, a system having just a few mateable components can be considered a “complex system” if manually tracking the configuration of the mateable components is problematic due to their location and/or if the adverse consequences to the system are considered severe if the configuration is improper or if the configuration changes due to a component failure or other unintended reason.
In an example embodiment, the systems and are described in connection with complex systems based on telecommunications system apparatus. Such apparatus includes components in the form of various types of network equipment, including the associated optical and electrical links in a data center application. Each system component (e.g., a piece of network equipment such as patch cable connectors, adapters, patch panels and rack-mounted housings, electronics and optical/electrical equipment, etc.) is provided with one or more RFID tags that are able to detect physical mating with RFID tags on other network equipment.
In another example embodiment, the RFID tags (which are also referred to in the art as “RFID transponders”) include a switch (e.g., a push-button-type switch) that electrically connects/disconnects and activates/deactivates the RFID antenna so that a person (e.g., a technician) installing components into the complex system can selectively activate the RFID tags during the process. In another embodiment, the switch provides a latchable signal to the integrated circuit (IC) as an IC input rather than or in addition to connecting or activating the antenna. For example, the technician can activate the RFID tag to generate a signal representative of the type of component to which the RFID tag is attached, and where the component is to be connected. An example of such an RFID tag is described in U.S. patent application Ser. No. 11/590,377 filed Oct. 31, 2006 and entitled “Radio Frequency Identification Transponder for Communicating the Condition of a Component,” which is incorporated herein by reference in its entirety.
Generally speaking, the term “component” as used herein is intended to be widely construed to include, for example, a piece of equipment, device, tool, apparatus, connector, structure, element, constituent, module, part, unit, machinery, gear, etc. that makes up the complex system and that plays a role in determining the complex system configuration. In example embodiments, some components of the complex system need not be considered when detecting the system configuration. What constitutes a component that needs to be considered when detecting the system configuration will depend on the nature of the complex system and the end-user's needs with regard to what constitutes operable and non-operable states of the complex system. For example, in the discussion below, a telecommunications system cabinet is considered, wherein the cabinet has a frame. In certain instances, the frame can be considered a “component” because it supports an equipment rack and may be worth identifying as a specific frame amongst a host of such frames in a central office. On the other hand, the frame as a component may not be considered relevant by the end-user as compared to detecting other components, such as jumper cables, when there is only one frame in a particular closet, for example. Thus, in the discussion and in the claims, a “set” of mateable components is considered, wherein the set can include some or all of the total number of components that constitute the complex system, as the case may be.
In the discussion below and in the figures, numbers presented in italics represent identification (ID) numbers N that generally include information having at least one piece of data relating to the component to which it is attached, such as for example, one or more serial numbers, relative locations, orientations, etc. In an example embodiment, the ID numbers N are stored and processed by the RFID configuration detection system in order to detect and communicate (e.g., display) the configuration of the complex system.
An example application of embodiments disclosed herein is described below in connection with telecommunications applications. However, the methods of detecting and/or directing the physical configuration of the complex system using mating RFID tags that exchange information (e.g., in the form of unique component ID numbers N) and that communicate their mating status can be used to automatically determine the configuration of any complex system having physically mateable components, and to direct the configuration (including the re-configuration) of the complex system.
Reference is now made in detail to certain embodiments, examples of which are illustrated in the accompanying drawings. Whenever possible, like or similar reference numerals are used throughout the drawings to refer to like or similar parts. The exemplary embodiments employ RFID technology that allows for automatically detecting and communicating the physical configuration of a complex system such as a telecommunications system. It should be understood that the embodiments disclosed herein relating to telecommunications systems are merely examples, each incorporating certain benefits. Various modifications and alterations may be made to the following examples within the scope of the present invention, and aspects of the different examples may be mixed in different ways to achieve yet further examples. Accordingly, the true scope of the invention is to be understood from the entirety of the present disclosure, in view of but not limited to the embodiments described herein. For example, in the example embodiments below, only a single RFID reader and antennas at the top and bottom of the racks or cabinets are shown and described for the sake of illustration. However, embodiments include configurations wherein one, two, or even more antennas are arranged in each shelf unit and/or wherein each shelf is completely independent of its rack and has one or more readers and one or more antennas associated therewith as needed to establish the configuration-detecting and/or configuration directing functionalities of the present invention as described in detail below.
Each first component 12A has associated therewith (e.g., fixed thereto) a first RFID tag 16A. First components 12A are all shown schematically as being the same, though in practice a variety of different types of first components are typically included in complex system 10. Each component 12A is configured to mate with (e.g., mechanically, electrically or optically connect to) or otherwise be placed in operable relationship with a corresponding second component 12B that has associated therewith (e.g., fixed thereto) a second RFID tag 16B. RFID tags 16A and 16B are configured to mate (i.e., electrically connect) when first component 12A mates with or is otherwise arranged in operable relationship to its counterpart second component 12B.
For example, in the case where complex system 10 is a telecommunications cabinet as discussed below, components 12A and/or 12B may be, for example, rack-mountable electronic devices, rack-mountable electrical/optical devices, rack-mountable housings, patch panels, jumper cables, switches, routers, servers, and the like. These components may need to be arranged in the system in a select manner, e.g., a select orientation, and with select connections.
Note that the terms “first” and “second” components are used in the present example for the sake of convenience. The various components could also include “third” components that mate with the second components, “fourth” components that mate with the third components, etc. Thus, the invention can include embodiments wherein three or more RFID tags may all communicate to each other rather than just two tags in a point-to-point topology, e.g., on a common bus or star configuration, such as shown schematically in some of the components and RFID tags in complex system 10 of
RFID tags 16A and 16B (which are referred to collectively as “RFID tag 16” when discussing properties common to each tag) are discussed in greater detail below. Each RFID tag 16 includes a substrate 18, an IC chip 20 (not shown in
With continuing reference to
With continuing reference to
Information processing system 40 can include a database unit 50 adapted (e.g., via database unit software stored on a computer-readable medium) to store and process information, particularly information about RFID tags 16 provided to the information processing system 40 from RFID reader 30. In an example embodiment, database unit 50 includes basic (e.g., background or general) information about complex system 10, such as its overall structure, the number of components 12 that constitute the system, the different types of components making up the system, orientation information about orientation-sensitive components, etc. In an example embodiment, this basic information is inputted into database unit 50 (e.g., manually, or via an external computer-readable medium such as a compact disk or so-called “memory stick”) prior to any configuration-status information being received from RFID reader 30. In an example embodiment, information processing system 40 includes a display 60, such as a standard liquid crystal display (LCD) monitor or personal digital assistant (PDA), to provide two non-limiting examples, that displays (e.g., using graphics and/or alphanumerics) the system configuration information stored in database unit 50.
With continuing reference to
RFID tags 16 are configured to store information in IC chip 20, such as ID numbers N, and exchange these numbers with its mated RFID tag. RFID tags 16 are also configured to transmit some or all of this information via a wireless RFID tag signal ST (i.e., RFID tag signals STA and STB for RFID tags 16A and 16B, respectively) transmitted by antenna 22. In an example embodiment, RFID reader 30 is adapted to transmit RF wireless reader signals SR, which in an example embodiment are used to interrogate (poll) one or more RFID tags 16. In another example embodiment, reader signals SR are used to write information to one or more RFID tags 16, or to activate a signaling device 27, such as a light (e.g., a light emitting diode (LED), on one or more of the RFID tags 16 (see
Database unit 50 within information processing system 40 stores and processes the information about complex system 10. In an example embodiment, database unit 50 combines the information received from RFID reader 30 with previously stored basic information about complex system 10 to map all received RFID tag ID numbers N to known component types. Using the pairs of RFID tag ID numbers N, information processing system 40 automatically determines the relative positions (and optionally the component orientation of orientation-sensitive components) of the mated components 12. As mentioned above, this information can then be displayed on display 60 to provide a user with a (real-time) view of the configuration of complex system 10.
For example, where complex system 10 is a part of a telecommunications network, information processing system 40 automatically indicates which patch panel is attached to which port on a given rack-mounted housing. This information is recorded in database unit 50 without it ever having to be manually entered. In an example embodiment, information processing system 40 also immediately detects when other components 12 (e.g., patch cables, patch panels, housings, switches, routers, and servers in the case of a telecommunications application) are added or removed from complex system 10 (e.g., from any data center cabinets), and automatically updates database unit 50 to reflect any changes in the configuration of complex system 10. This method leverages the pre-configuration of all RFID tags 16 at manufacture time and also provides a real-time configuration status of complex system 10.
In an example embodiment where a component 12 includes more than one RFID tag 16 (e.g., a patch panel with twelve adapters, where each adapter has its own RFID tag), a standardized ID number scheme is used for each RFID tag so that its physical position P in complex system 10 (or its position relative to another component) can be determined via its ID number N. In addition, for components having orientation sensitivity, the RFID tag information allows the database unit software to determine if the orientation of the installed component is correct.
In an example embodiment, contact members 24A are “pogo pins” electrically connected to IC chip 20A, while contact members 24B are in the form of contact pads or contact slots electrically connected to IC chip 20B and adapted to mate with contact members 24A to establish an electrical connection between IC chips 20A and 20B, as shown in
When RFID tags 16A and 16B are disconnected, in an example embodiment their disconnected state is saved in their respective IC chips 20A and 20B to indicate that they are disconnected from one another. This “disconnect” state is communicated to RFID reader 30 on subsequent RFID reader polls via reader signals SR or is transmitted by the RFID tags 16 at or near the time when the disconnection occurs. This disconnect state can also be displayed using signaling device 27 on one or both of the RFID tags 16 associated with disconnected components 12.
In an example embodiment, front and rear rails 102 and 104 include support brackets (not shown) and define an equipment rack 12R that supports one or more telecommunications network-related components 12 such as, for example, rack-mountable housings 12H configured to be stored in a stacked fashion within frame interior 120. In one example embodiment, each rack-mountable housing 12H includes a front 141, a top panel 142, a bottom panel 144, and right and left side panels 146R and 146L that define an open housing interior 148.
RFID system 8 includes one or more “rail” RFID tags 16R mounted on front right 102R (e.g., on front surface 103R). RFID system 8 also includes one or more “housing” RFID tags 16H mounted on each housing 12H. In an example embodiment, at least one of the housing RFID tags 16H is mounted on one of the housing side panels 146R or 146L so as to mate with a corresponding rail RFID tag 16R when housing 12H is supported within equipment rack 12R of cabinet 12C. Other housing RFID tags 16H are shown arranged on housing top panel 142 as well as within housing interior 148 for mating with RFID tags on individual patch panels, as discussed below.
In an example embodiment, all rail RFID tags 16R in RFID system 8 are programmed at the time of manufacture with the aforementioned unique ID numbers N. In an example embodiment, ID numbers N indicate, for example, both a serial number N for the component and the relative position P of the component RFID tag. For example, ID numbers NR for rail RFID tags 16R indicate each RFID tag's 16R relative position along front rail 102R. This also allows each rail 102 to be automatically associated with a cabinet ID number NC of the cabinet 12C (or frame ID number NF of the frame 12F) in which it is installed. Likewise, in an example embodiment, all housing RFID tags 16H are programmed at the time of manufacture with unique identification numbers NH that indicate both the housing serial number and the position of the RFID tag PH on the housing (e.g., its relative location along the top panel 142).
In an example embodiment, at least one RFID reader 30 is included within, on or near cabinet 12C. In one example embodiment, RFID reader 30 is mounted on frame top panel 108 (as illustrated in
An example embodiment of RFID system 8 provides various RFID tags 16 arranged such that if a given component 12 of complex system 10 is not installed in its proper orientation, the corresponding RFID tags 16 cannot mate. For example, with reference to
In an alternate example embodiment illustrated in
When housing 12H is installed in cabinet 12C, the housing RFID tag 16H on side panel 146R automatically mates with the corresponding rail RFID tag 16R on front vertical rail 102R, and the RFID tags 16 exchange information. When the mated RFID tags 16R and 16H are polled by reader signal SR from RFID reader antenna system 32, in an example embodiment both RFID tags 16 respond with respective RFID tag signals ST that include the identification number of their mating RFID tag 16 (see e.g.,
As illustrated generally in
With reference now to
Now presented is an example showing how RFID system 8 can be used to automatically detect the physical configuration of a telecommunications data center having components such as cables, fibers and like equipment such as described above, and to direct the configuration of the system.
For example, with reference to
With reference now to
An example embodiment of RFID system 8 of the present invention uses RFID tags 16 to confirm that orientation-sensitive components 12 have been correctly installed into complex system 10.
When all of components 12 are finally installed in complex system 10 and RFID reader 30 has identified the set of all mated RFID tags 16, the component configuration information is provided to an end-user of complex system 10 (or an end-user of RFID system 8, as the case may be). In an example embodiment, information about the component configuration of complex system 10 is displayed on display 60 of information processing system 40. In an example embodiment, information processing system 40 includes a graphics driver and uses graphics to display a representation of complex system 10 on display 60.
An example of providing a progressive summary of the evolving configuration of complex system 10 as based on individual mated RFID tag data of the type that might be communicated via display 60 of information processing system 40 via the operation of the network management software operating in database unit 50 is as follows:
Based on this information, the configuration of any component 12 in complex system 10 can be determined. For example, it is possible to determine how a specific jumper cable 12J is configured, and this information may be displayed on display 60 as follows:
This particular telecommunication-based example utilizes a method that incorporates detection of a jumper cable to adapters, adapter attachment in patch panels, patch panel attachment to housings, and housing attachment to cabinets. While this hierarchical approach is well-suited for many communications network equipment applications, including data center management, there are other applications where a non-hierarchical interconnection of mating RFID tags is desirable. For example, consider determining the physical configuration of a two-dimensional array of components. RFID tags can be positioned on the four sides of each component, and arranged to mate with corresponding tags on neighboring components. In addition, similar approaches could be used in applications other than communications network equipment applications. For example, similar approaches could be used to assure proper assembly of complex mechanical, electrical, and optical structures, as well as complex structures that employ combinations of electrical, mechanical and optical components.
As discussed above, RFID tags 16 can include switches that allow for the RFID tag 16 to transmit information to RFID reader 30 about the component 12 to which the particular RFID tag 16 is attached. Thus, in an example embodiment, the method includes actively managing the configuration of complex system 10 as the complex system 10 is being configured, for example, by an on-site technician. This method includes, for example, activating the RFID tag 16 for a given component (for example, a component 12A of
When the proper connection is made, confirmation is carried out as described above by both RFID tags 16A and 16B transmitting the other tags ID number N to RFID reader 30, which information is then transmitted to information processing system 40. If the particular components 12A and 12B are not supposed to be connected, then information processing system 40 sends a signal to RFID reader 30 that indicates an incorrect connection. RFID reader 30 then sends a signal to one or both RFID tags 16A and 16B to cause signaling device(s) 27 to be activated in a manner that indicates a connection error (e.g., blinking red lights).
Embodiments of the present invention have a number of advantages, particularly relating to the application to complex telecommunications systems. By standardizing the RFID tag-to-tag mating hardware, the same method for detecting installed network components can be applied to all types of data center network equipment, including components from different companies and manufacturers. Further, the ability to automatically monitor the configuration of a complex telecommunications system can be used to help guide the system installers to achieve the proper system configuration in less time and with fewer errors in the final system.
In an example embodiment, the database unit software includes network management software adapted to determine the current (i.e., real-time) physical configuration of a data center network using information from mated RFID tag pairs on network equipment. Thus, the system configuration can be constantly updated as changes are made to the system, such as components being mated (connected) and unmated (disconnected). This eliminates the need to manually record and enter physical location data on network equipment into network management software both during system set-up as well as during system maintenance or when changing the system configuration for any reason. It also ensures that the network management software database is completely accurate, even while new network equipment is being added or removed.
Another advantage of the embodiments disclosed herein is that the RFID configuration detection system can be set up to track the correct orientation of orientation-sensitive components and can be configured to provide detection redundancy should one of the RFID tags fail or should two tags fail to properly mate.
Many modifications and other embodiments of the invention set forth herein will come to mind to one skilled in the art to which the invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings.
Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
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|U.S. Classification||340/572.8, 340/10.41, 340/539.1, 340/10.1|
|Cooperative Classification||G06K19/0717, G06K17/0006, G06K19/0723, G06K5/02, G06K2017/0093, H04Q1/149|
|European Classification||G06K17/00B1, G06K19/07T, G06K5/02, G06K19/07E2|
|Apr 20, 2009||AS||Assignment|
Owner name: CORNING CABLE SYSTEMS, LLC, NEW YORK
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DOWNIE, JOHN DAVID;SUTHERLAND, JAMES SCOTT;WAGNER, RICHARD EDWARD;AND OTHERS;REEL/FRAME:022565/0083;SIGNING DATES FROM 20090409 TO 20090414
Owner name: CORNING CABLE SYSTEMS, LLC, NEW YORK
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DOWNIE, JOHN DAVID;SUTHERLAND, JAMES SCOTT;WAGNER, RICHARD EDWARD;AND OTHERS;SIGNING DATES FROM 20090409 TO 20090414;REEL/FRAME:022565/0083
|Aug 28, 2014||AS||Assignment|
Owner name: CORNING OPTICAL COMMUNICATIONS LLC, NORTH CAROLINA
Free format text: CHANGE OF NAME;ASSIGNOR:CORNING CABLE SYSTEMS LLC;REEL/FRAME:033647/0231
Effective date: 20131231
Owner name: CCS TECHNOLOGY, INC., DELAWARE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CORNING OPTICAL COMMUNICATIONS LLC;REEL/FRAME:033654/0945
Effective date: 20140417
|Sep 21, 2015||FPAY||Fee payment|
Year of fee payment: 4